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. Author manuscript; available in PMC: 2020 Sep 1.
Published in final edited form as: Spine (Phila Pa 1976). 2019 Sep;44(18):1257–1269. doi: 10.1097/BRS.0000000000003055

Figure 2. Both 1x and 3x IVD injury reduced IVD height 6 weeks after injury, with no significant differences between male and female IVDs or between 1x and 3x injuries.

Figure 2.

(A) IVD height was calculated from lateral X-rays of the L3/4, L4/5, and L5/6 IVD space (box). (B) Pre-operative comparisons between lumbar IVD levels by sex. Significant sex differences in IVD height were only observed at the L3/4 and L2/3 IVD. (C) The percentage change in the average IVD height across these three levels was significantly different from pre-operative baseline for 1x and 3x, but did not differ between males and females. (n=6–8, * p<0.05, *** p<0.001, **** p<0.0001 from baseline, p values for 2-way ANOVA effects shown below each graph).